Chamber closure



April 28, 1953 D. D. POWERS CHAMBER CLOSURE Filed Feb. 8, 1949 INVENTORIDIXON D. POWERS (W 7 BY ATTORNEYS.

Patented Apr. 28, 1953 UNITED STATES ATENT OFFICE CHANHBER CLOSUREApplication February 8, 1949, Serial No. 75,270

1 Claim.

This invention relates to chamber closures and more particularly toclosures for chambers subjected to high pressure. In such cases thechamber is subject to expansion and distortion which, if an ordinaryplug is employed, will cause the threads to strip, resulting in ablow-out of the plug.

One of the objects of this invention is to provide a plug of thecharacter described which is simple in construction, effective in itsaction, economical to manufacture and capable of ready installation andreplacement.

Further objects will appear from the detail description in which will beset forth an illustrative embodiment of this invention. It is to beunderstood, however, that this invention is susceptible to variousembodiments within the scope of the appended claim.

In the accompanying drawing Figure 1 is an end elevation of the chamberwith the closure embodying this invention installed therein; Figure 2 isa section on the line 2--2 of Figure 1, and Figure 3 is a section on theline 3-3 of Figure 2.

Generally stated and in accordance with an illustrative embodiment ofthis invention a plug is provided which is designed to fit the chamberand a sectional retaining ring is designed to removably fit an annularrecess provided in the chamber and which ring is designed for abutmentby the plug. The ring is composed of a series of sections constructedfor relative radial placement and removal within the recess, andretaining means may be provided adjacent one of the ring sectionsdesigned to retain the sections in the recess. The plug may be providedwith an annular packing and a cover may be provided for placementagainst the chamber and having means for clamping the ring in order toretain it.

Referring now to the accompanying drawing, 1 designates a chamber of anysuitable construction designed to receive a liquid under high pressure.This chamber is provided with a seat 2 adapted to receive the plug 3designed to fit the seat, but loosely enough so that the plug can beplaced and removed. In order to provide for any additional seal apacking 4 in the form of a ring of rubber is provided, this ring havinginside and outside diameters so that it will be compressed when the plugis placed in position. The retaining ring comprising a series ofsections, in this case 5, 6, l and 8, is arranged to be received in thechamber. This ring is arranged for removal and replacement in the seatand for that purpose the special section 8 is provided which may bemoved radially inwardly and outwardly between the sections 6 and i. Thispermits the other sections 5, 6 and I to be removed or replaced. Inorder to retain the sectional retaining ring in place a series oftapered screws I ll, each provided with a head of angular form, isprovided with threads received by threaded half-sockets formed in theadjacent ends of the retainin ring sections as shown in Figure 3. Thesescrews thus provide means for retaining the sectional ring in positionin the recess 8. A retainer in the form of a plate ii is provided toretain or clamp the plug against the ring; for this purpose the plate isperforated to receive screws l2, threaded into sockets in the plug 3. i

It will thus be seen that the chamber closure provides effective meansfor closing the chamber. The plug may be placed in position by insertingthe same in the chamber followed by placement of the ring sections inthe annular groove and the plug is finally clamped against the ring byplacing the end plate in position and clamping the plu against the ring.The plug may be removed by reversing the operations just described.

Having thus described the invention, what is claimed is:

A closure for a chamber provided with an annular recess, comprising aplug designed to fit the chamber, said plu being provided with acircumferential recess intermediate its inner and outer faces, a packingring seated within. said recess and compressed against the inner surfaceof said chamber, a ring designed to fit the annular chamber recess forabutment by said plug and composed of a series of sections constructedfor relative radial placement within the recess, retaining meanspositioned between adjacent ring sections and designed to retain saidsections in the recess, and a plate, beyond said ring with respect tosaid plug, provided with means for retaining the said plug against thesaid ring.

DIXON D. POWERS.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,366,496 Roop Jan. 25, 1921 1,371,594. Alden Mar. 15, 19212,203,364 Rathbun June 4, 1940 2,223,320 Jacocks Nov. 26, 1940 2,226,495Jacocks Dec. 24, 1940 2,237,029 Fisher Apr. 1, 1941 2,342,186 FisherFeb. 22, 1944 2,401,856 Brock June 11, 1946

